Superior Electric 60M117BT Powerstat Variable Transformer

Superior Electric's POWERSTAT 60M117BT is a single‑phase variable transformer that accepts 120 VAC input and delivers a continuously adjustable AC output from 0 up to the full line voltage, making it a compact, robust tool for lab benches and test setups. Built for heavy‑duty service, it combines a rugged mechanical frame with a low‑torque brush/commutator design and an integrated heat‑dissipation system to support long life in demanding environments. In the 117C family, models on 120 VAC lines are rated for 12 A of continuous output current, with a 15 A rating for constant impedance (or similar load types), and the output voltage tracks the input proportionally across the full rotation range. The device provides truly continuous adjustment, allowing fine voltage settings in fractions of a volt as the brush taps contact successive turns. Typical applications span electronics testing, burn‑in and qualification testing, motor or heater control, and any scenario requiring stable, adjustable AC voltage without an external regulator. Superior Electric emphasizes rugged construction, reliability in challenging environments, and straightforward maintenance, which makes the 60M117BT well suited to production test cells, engineering labs, and service benches that demand precise voltage regulation with durable performance.